The key methods to improve the accuracy of multilingual OCR recognition are as follows:
- Ensure language packs are installedAs
tesseract-ocr-chi-simFor Simplified Chinese - Correctly specify the language parameter: By
-l eng+fra+deuFormat support for mixed multi-language recognition - Preprocessing Optimization: Enable
--cleanCleaning up noise in scans.--deskewAutomatic tilt correction - Image quality optimization: Used when processing low quality scans
--oversample 300Increase DPI - Validation of results: Cooperation
--verbose 2View detailed logs for targeted parameter adjustments
For special characters (e.g. Japanese kanji), it is recommended to test different versions of Tesseract to get the best recognition.
This answer comes from the articleOCRmyPDF: scanned PDF into searchable text of the open source toolThe
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